String trimmer accessory



FIG. 1 is a top perspective view of a string trimmer accessory showing my new design;

FIG. 2 is a left view thereof

FIG. 3 is a right view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top plan thereof; and,

FIG. 7 is a bottom plan view.

In the above drawings, the broken lines and areas within the broken lines represent portions of the article and form no part of the claimed design. 

CLAIM The ornamental design for a string trimmer accessory, as shown and described. 